DUC Prop pitch
in 912 / 914 Technical Questions
7 years ago
I recently replaced a woodcomp prop on my stingsport that had a crack in the hub to the new DUC swirl 3, It has definitely increased my knots about 5 to 8 in Cruise ( from 105-110 to 110-120) still trying to dial it in with wide open throttle RPM settings at first it was too flat and constantly over exceeding 5650-5750 at wide open throttle cruise 3500 feet, and jumped off the runway, been back and forth, now it’s producing about 5250@ 3500-5500’ft, I had a mechanic tell me that the Rotax 912uls wants to be closer to 5450 right under 5500 continuous for the Rotax engines was wanting to know if this is the better setting I’m concerned that the engine is not spinning fast enough and the lower RPM setting is laboring the engine in the long run ?
